18mm Screw Headspace Vials, 10ml, Round Bottom, 22.5*46mm
Material: USP1, Borosilicate Glass 10ml Precision Screw Neck 18mm Diameter Color: Clear / Amber Bottom: Round Bottom Vial Size: 22.5*46mm Cap: 18mm Magnetic Precision Screw Metal Cap Septa: PTFE/Silicone 17.5*1.3-1.5mm PTFE/Transparent Silicone Septa 1.3mm for SPME